The Uzhgorod green space system includes a large number of parks that are monuments of local landscape art. It is relevant today to study their species composition and ecological and biological features. Eight parks and squares of the city of different subordination, which are a part of the nature reserve fund of Ukraine, were selected as objects of research. During the subarea inventory, the taxonomic composition of the plantations of these objects was established, which is formed by representatives of 36 families, 67 genera, and 119 species of woody plants. Predominantly representatives of the Department of Angiosperms (93 species). The systematic analysis of the dendroflora showed the numerical representation of the families Pinaceae (22%), Rosaceae (17 , 6%) and Oleaceae (14 , 7%). Most North American species (36 , 4%). The researches of the identified plants according to their relation to the main environmental factors – light, humidity, air temperature and soil richness are carried out. The results obtained indicate a broad amplitude of ecomorphs and adaptive features of woody plants